1 /*
2 * Hibernate, Relational Persistence for Idiomatic Java
3 *
4 * Copyright (c) 2008, Red Hat Middleware LLC or third-party contributors as
5 * indicated by the @author tags or express copyright attribution
6 * statements applied by the authors. All third-party contributions are
7 * distributed under license by Red Hat Middleware LLC.
8 *
9 * This copyrighted material is made available to anyone wishing to use, modify,
10 * copy, or redistribute it subject to the terms and conditions of the GNU
11 * Lesser General Public License, as published by the Free Software Foundation.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
16 * for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public License
19 * along with this distribution; if not, write to:
20 * Free Software Foundation, Inc.
21 * 51 Franklin Street, Fifth Floor
22 * Boston, MA 02110-1301 USA
23 *
24 */
25 package org.hibernate.event.def;
26
27 import org.hibernate.HibernateException;
28 import org.hibernate.collection.PersistentCollection;
29 import org.hibernate.engine.Collections;
30 import org.hibernate.event.EventSource;
31 import org.hibernate.type.CollectionType;
32
33 /**
34 * Process collections reachable from an entity. This
35 * visitor assumes that wrap was already performed for
36 * the entity.
37 *
38 * @author Gavin King
39 */
40 public class FlushVisitor extends AbstractVisitor {
41
42 private Object owner;
43
44 Object processCollection(Object collection, CollectionType type)
45 throws HibernateException {
46
47 if (collection==CollectionType.UNFETCHED_COLLECTION) {
48 return null;
49 }
50
51 if (collection!=null) {
52 final PersistentCollection coll;
53 if ( type.hasHolder( getSession().getEntityMode() ) ) {
54 coll = getSession().getPersistenceContext().getCollectionHolder(collection);
55 }
56 else {
57 coll = (PersistentCollection) collection;
58 }
59
60 Collections.processReachableCollection( coll, type, owner, getSession() );
61 }
62
63 return null;
64
65 }
66
67 FlushVisitor(EventSource session, Object owner) {
68 super(session);
69 this.owner = owner;
70 }
71
72 }
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